基于RS/GIS的西门岛海洋特别保护区滩涂湿地景观格局变化分析

采用2006年SPOT-5和2010年WorldView-1两个时相的高分辨率卫星遥感影像,综合利用地理信息系统(GIS)技术及景观生态学理论,分析了2006~2010年西门岛海洋特别保护区滩涂湿地景观及其转移变化,并采用马尔科夫模型预测了西门岛海洋特别保护区2014年滩涂湿地各景观类型的面积比例。结果表明:①保护区各景观类型朝均衡化和多样化发展,保护区滩涂湿地异质性增加、抗干扰能力增强;②预测分析表明人类对滩涂湿地资源的利用朝着健康可持续方向发展。

Study on Wetland Landscape Pattern Change in the Ximen Island Marine Special Protected Area based on RS and GIS

Ximen Island Marine Special Protected Area is the first national marine special protected area in Zhejiang province.Remote sensing,geographic Information System technologies,and landscape theory are used to analyze landscape dynamics.In this study,SPOT-5 remote sensing image in 2006 and WorldView-1 remote sensing image in 2010 were acquired for the wetland area.The landscapes in the wetland area are classified as seaweed,breeding,mangrove forest and bare mud based on interpretation signs.Areas and landscape indices are calculated .Then changes of every landscape type are analyzed and predicted by Markov model.The results show that Shannon diversity index and evenness index in the wetland of the protected area increase,which means that the landscape types in wetland are becoming diversity.In addition,the predictions show that areas of breeding and bare mud will decrease,and the areas of seaweed and mangrove forest will slowly increase,which reveals that instead and human have gradually recognized the importance of wetland resource.